The main composition of biogas is -

Correct option is A

· Composition of Biogas:
· Biogas is primarily composed of methane (CH₄), which constitutes 50-75% of the gas.
· Other components include:
· Carbon dioxide (CO₂): 25-50%.
· Trace gases like nitrogen (N₂), hydrogen (H₂), and hydrogen sulfide (H₂S).
· Importance of Methane:
· Methane is the primary energy carrier in biogas, making it a useful renewable energy source.